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authorEvan Lojewski <github@meklort.com>2018-04-08 13:03:21 -0600
committerRaptor Engineering Development Team <support@raptorengineering.com>2018-04-19 22:10:35 -0500
commit30dfd3b377d24172d9af9d6381b3d5af72a83295 (patch)
treefcb026d8f7ad93c171902297dfd0b4f078ae8a93 /src/import/chips/p9/procedures/hwp/memory/lib/utils/conversions.H
parentc06a321964200ef77090b1b0e4e11ee903088508 (diff)
downloadtalos-hostboot-04-19-2018.tar.gz
talos-hostboot-04-19-2018.zip
Update the ps_to_freq function to use a range of values instead of expecting an exact value. Adjust the 2133 and 1866 values to be larger thatn the expected JEDEC value by 1 in order to handel possible rounding issues with the SPD data.04-19-2018
This cahnge was tested with the M393A1G40DB0-CPB RAM module which was rejected by the previous code due to the time_in_ps being 938 instead of the previously expected value of 937. Memtester was run with the resulting configuration and shows no errors: / # /usr/sbin/memtester 6G 4 memtester version 4.3.0 (64-bit) Copyright (C) 2001-2012 Charles Cazabon. Licensed under the GNU General Public License version 2 (only). pagesize is 65536 pagesizemask is 0xffffffffffff0000 want 6144MB (6442450944 bytes) got 6144MB (6442450944 bytes), trying mlock ...locked. Loop 1/4: Stuck Address : ok Random Value : ok Compare XOR : ok Compare SUB : ok Compare MUL : ok Compare DIV : ok Compare OR : ok Compare AND : ok Sequential Increment: ok Solid Bits : ok Block Sequential : ok Checkerboard : ok Bit Spread : ok Bit Flip : ok Walking Ones : ok Walking Zeroes : ok 8-bit Writes : ok 16-bit Writes : ok Signed-off-by: Evan Lojewski <github@meklort.com>
Diffstat (limited to 'src/import/chips/p9/procedures/hwp/memory/lib/utils/conversions.H')
-rw-r--r--src/import/chips/p9/procedures/hwp/memory/lib/utils/conversions.H29
1 files changed, 8 insertions, 21 deletions
diff --git a/src/import/chips/p9/procedures/hwp/memory/lib/utils/conversions.H b/src/import/chips/p9/procedures/hwp/memory/lib/utils/conversions.H
index b18eb9b50..14c10934b 100644
--- a/src/import/chips/p9/procedures/hwp/memory/lib/utils/conversions.H
+++ b/src/import/chips/p9/procedures/hwp/memory/lib/utils/conversions.H
@@ -130,28 +130,15 @@ inline fapi2::ReturnCode freq_to_ps(const T i_speed_grade, OT& o_tCK_in_ps )
template<typename T, typename OT>
fapi2::ReturnCode ps_to_freq(const T i_time_in_ps, OT& o_speed_grade)
{
- switch(i_time_in_ps)
+ if(i_time_in_ps <= 750) o_speed_grade = fapi2::ENUM_ATTR_MSS_FREQ_MT2666; // Ram is at least as fast as 2666MT/s
+ else if(i_time_in_ps <= 833) o_speed_grade = fapi2::ENUM_ATTR_MSS_FREQ_MT2400; // Ram is at least as fast as 2400MT/s
+ else if(i_time_in_ps <= 938) o_speed_grade = fapi2::ENUM_ATTR_MSS_FREQ_MT2133; // Ram is at least as fast as 2133MT/s
+ else if(i_time_in_ps <= 1072) o_speed_grade = fapi2::ENUM_ATTR_MSS_FREQ_MT1866; // Ram is at least as fast as 1866MT/s
+ else
{
- case 750:
- o_speed_grade = fapi2::ENUM_ATTR_MSS_FREQ_MT2666;
- break;
-
- case 833:
- o_speed_grade = fapi2::ENUM_ATTR_MSS_FREQ_MT2400;
- break;
-
- case 937:
- o_speed_grade = fapi2::ENUM_ATTR_MSS_FREQ_MT2133;
- break;
-
- case 1071:
- o_speed_grade = fapi2::ENUM_ATTR_MSS_FREQ_MT1866;
- break;
-
- default:
- FAPI_ERR("Invalid clock period (tCK) - %d - provided", i_time_in_ps);
- return fapi2::FAPI2_RC_INVALID_PARAMETER;
- break;
+ // Ram is too slow.
+ FAPI_ERR("Invalid clock period (tCK) - %d - provided", i_time_in_ps);
+ return fapi2::FAPI2_RC_INVALID_PARAMETER;
}
return fapi2::FAPI2_RC_SUCCESS;
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